GAE DatastoreService Query not getting any results?

UPDATE: It appears to work if I remove transaction related code, any reason why that would be?

I'm having trouble with a simple hello world using GAE DatastoreService. I'm just trying to put stuff in and then list it, the following code should create two entities and puts them and then query for them and list them back. But I don't get the listing back, the query iterables are empty. No errors occur.